FREE AND STUDY GAMES ABOUT PHYSICAL SCIENCE

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FREE AND STUDY GAMES ABOUT PHYSICAL SCIENCE

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -41 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Which of the following expands most when the temperature is lowered? Equal volumes of iron, wood, helium, or water at 4 degrees C?

Answer:

Water at 4 degrees C Question 2: A nutritionist in the United States measures the food energy in units of

Answer:

Calories (with a capital C)

Question 3: At absolute zero, a substance has

Answer:

No more energy to give up Question 4: A volume of helium gas has a temperature of 10°C. The same gas twice as hot has a temperature of

Answer:

293 degrees C

Question 5: The direction of natural processes is from states of

Answer:

Higher order to Lower order

Question 6: Thermal energy can be measured in

Answer:

calories, Calories, or Joules Question 7: If the temperature of a sample of 4°C water slightly decreases, the sample of water

Answer:

Expands Question 8: Which law of thermodynamics is a restatement of the conservation of energy as it applies to thermal systems?

Answer:

1st law

Question 9: Compared to a giant iceberg, a hot cup of coffee has

Answer:

A higher temperature, but less thermal energy

Question 10: Heat is thermal energy that flows due to

Answer:

Temperature differences Question 11: To say that water has a high specific heat capacity is to say that water

Answer:

Releases a lot of energy in cooling, absorbs a lot of energy (increasing the temperature), and requires a lot of energy for an increase in temperature

Question 12: Ice has a lower density than water because ice

Answer:

Is composed of open-structured crystals.

Question 13: If a room is cold it is due to a

Answer:

Lack of adequate thermal energy Question 14: Which of the following normally warms up faster when heat is applied- iron, glass, wood, or water?

Answer:

Iron

Question 15: More disorder means

Answer:

More entropy Question 16: If the temperature of a sample of 4°C water slightly increases, the sample of water

Answer:

Expands Question 17: Whether one object is warmer than another object has most to do with

Answer:

Molecular Kinetic Energy Question 18: When work is done on a system and no heat is added, the temperature of the system

Answer:

Increases

Question 19: Entropy is most closely related to the

Answer:

2nd law of thermodynamics Question 20: Before ice can form on a lake, all the water in the lake must be cooled to

Answer:

• degrees C

Question 21: Which law of thermodynamics addresses the direction of heat flow?

Answer:

2nd law

Question 22: A metal ring with a gap in it is shaped like the letter

• When the hot metal cools, the gap becomes

Answer:

Narrower Question 23: The fact that desert sand is very hot in the day and very cold at night is evidence that sand has a

Answer:

Low specific heat capacity

Question 24: The greatest expansion of water occurs when

Answer:

It turns to ice Question 25: Suppose you rapidly stir some raw eggs with an egg beater. The temperature of the eggs will

Answer:

Increase

Question 26: A substance that heats up relatively quickly has a

Answer:

Low specific heat capacity Question 27: San Francisco has milder winters than Washington D.C. due to water's high

Answer:

Specific heat capacity

Question 28: The temperature of melting ice is

Answer:

• degrees C or 32 degrees F